Type-writing machine.



- WITNESSES:

A. G. F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED JAN.23, 1913.

1, H5378, Patented July 6, 1915.

IN VENTOR:

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OFFICE.

ALFRED G. F. KUROWSKI, OF NEW YORK, N. Y., ASSIGNOR TO :UNDER'W'OOD TYPE- WRITIER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Original application filed September 27,1912, Serial, No. 722,582. Divided and this application filed January Specification of Letters Patent.

Patented July'fi, 1915.

23,1913. SerialNo. 743,698.

To aZZ whom it may concern Be it known that L Anrnnn G. F. KUROW- SKI, a citizen of the United States, residing in Brooklyn, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Type- Writing Machines, of which the following is a specification.

The present invention relates to typewriting machines, and more particularly to a series of stops which may be supported on the typewriter carriage and are adapted to be selectively set into position to cooperate with counter-stops.

The support or frame which carries the stops may comprise a rack bar or bars formed with internal teeth which separate and guide the stops. Spring detents are preferably provided and arranged to hold the stops in any position in which they may be standing. These detents may comprise spring pressed balls adapted to seat in recesses formed in the edges of the stops.

My invention provides a simple and compact structure whicli permits the stops to be readily set and which securely holds them against the lateral strain brought upon them as they engage the counter-stops.

Other features and advantages will here-;

inafter appear.

The present invention is a division of my co-pending application No. Se tember 27, 1912.

n theaccompanying drawings, Figure 1 is a part sectional perspective view, showing a set of stops and supporting ,means therefor constructed in accordance with the principles of my invention. Fig: 2 is a sectional elevation view of the same. Fig. 3 is a top plan view, a portion of the casing being broken away to show the internal arrangement of parts. Fig. 4 is a fragmentary front elevation view of a rack bar.

The stops 1 are supported and vertically movable in a frame 2 which may be secured by means of arms 3 to the typewriter carriage. The frame 2, as herein shown, com-. prises oppositely disposed rack bars 4 formed with vertical rack teeth 6 separated by intervening notches or recesses 5 in which the stops 1 are supported and guided.- The stops are formed with recesses or notches 7, preferably in each side edge, to cooperate with detents 8, which are shown in the the opposite bar.

722,582, filedform of balls operated by coil springs 9,

seated in recesses 10 formed in. the rack bars. As shown in Figs. 3 and 4, the recesses 10 in one bar alternate with those in' This arrangement provides ample room for; each spring and detent and permits all of the detents to be placed at the same level. therefore all be made the same, and being notched in both edges are reversible and interchangeable. The rackbars are connected by a casing 11 extending across the tops and along the sides of the rack bars, the casing being secured in position by screws 12. The casing is provided with a series of slots 14 through which the upper ends of the stops extend. The upper portion of the somewhat narrower than the lower portions, thereby forming shoulders 13 adapted to strike against the casing at the ends of the slots 14, and thereby prevent removal of the operative position by any suitable means, as

The stops may i stops are 1 for example, the vertically movable bar 15,

the stops being brought successively'into position to be operated-by said bar during the travel of the carriage. A series of counter-stops 16 are adapted to be selectively operated into position to cooperate with any stop 1 that has been depressed. When a stop 1 has been set by the bar 15, the detent 8 enters the upper notch 7 of the stop and holds it in such position. The stops may be restored by any suitable means, such as a cam'17 movable into a position beneath the frame 2, so that the operated stops will be engaged thereby during the travel of the carriage and restored to initial position, in which position the detent 8 enters the lower notch 7 of the stop.

As the means for actuating the stop-setting bar 15, the counter-stops 16 and the restoring device 17 form no part .of the present invention, and may vary widely in structure, arrangement and mode of operation,

they are not herein disclosed. It will be understood also that althoughthe frame 2 with the stops is described as carried by the machine carriage, the invention covers the useof a set of stops not thus carried, as for example, stops mounted ina stationary frame and cotiperating with a counter-stop or stops on the machine carriage.

frame therefor comprising oppositely disposed rack bars between which the stops are located and in which the stops are supported and guided, and spring detents seated in said bars and cooperating with the stops, the detentsfor each two adjacent stops being supported in opposite bars.

2. In a typewriting machine, the combination of a series ofstops, a supporting frame therefor comprising opposite rackbars between which the stops are located and in which the stops are guided, and a casing connecting said bars and formed with slots through which the ends of the stops extend.

3. In a typewriting machine, the combination of a series of stops, oppositely, disposed rack bars by which the stops are slidably supported and guided, a plate connectlng the rack bars and formed with slots, sald stops having reduced portions extending through said slots and enlarged portions to prevent the removal of the stops through the slots.

4 In a typewriting machine, the combi nation of a series of vertically disposed stops, a supporting frame, racks in said frame between which the stops are located and in which said stops are supported and gulded, said stops normally projecting above the frame and each movable downward into' position to project below the frame, and :prmg detents to hold the stops in such posi- 5, In a typewriting machine, the combinat10n of a pair of parallel stop-supporting bars spaced apart, stops bridging the space between said bars, means for supporting and gulding the stops, and a plate connecting said bars and formed with a series of openings through which the stops project.

6. In a typewriting machine, the combination of a pair of parallel rack bars having rack teeth formed on their inner faces, said bars spaced apart along the rack teeth, a series of stops bridging said space and supported and guided by the rack teeth, and a cover plate connecting said bars and provided with a series of openings through which the stops may be projected.

7 In a typewriting machine, the combination of a pair of parallel rack bars having abutting end portions, said bars being cut away to form an opening extending longitudinally of the bars between said end portions, rack teeth formed on the inner faces of said bars along said opening, stops guided in said rack teeth, said bars formed with lateral openings therethrough, detents in said lateral openings to engage the stops and yieldingly hold them in adjusted position, springs in said lateral openings behind the detents, and a cover plate for said bars formed with a series of slots through which the stops may project, and also provided with flanges extending over the lateral openings to retain said springs and detents in position.

8. In a typewriting machine, the combination of a row of duplicate stops all mounted at letter-feeding intervals, said stops being settable, one at a time, to engage selectively a single row of effective column stops, spaced rack bars supporting and guiding said engaging stops which bridge the space between said rack bars, each engaging stop having an individual detent for holding it in both its retracted and set positions, said rack bars having openings extending from their inner faces to receive said detents, and means to retain the detents within said openings.

9. In a typewriting machine, the combination of a row of duplicate stops all mounted at letter-feeding intervals, said stops being settable, one at a time, to engage .selectively a single row of effective column stops, a frame for said engaging stops having spaced rack bars bridged by said stops to support and guide them, and individual detents within and inclosed by said frame for each stop to hold it in both its retracted and set positions.

10. In a typewriting machine, the combination of a row of duplicate stops all mounted at letter-feeding intervals, said stops being settable, one at a time, to engage selectively a single row of effective column stops, a frame for said engaging stops having spaced rack bars bridged by said stops to support and guide them, and individual detents for each stopto hold it in both its retracted and set positions, said detents comprising spring-actuated balls inclosed by said frame'and engaging the stops at points within the frame.

11. In a typewriting machine, the combination of a row of duplicate stops all mounted at letter-feeding intervals, said stops being settable, one at a time, to engage selectively a single row of effective column stops, rack bars each providedwith teeth separated by recesses to slidably support and guide said engaging stops, the latter being provided with notches, an individual detent for each engaging stop operating only hor1- zontally to engage in said recesses and hold the stop in both its retracted and set pos1- tions, and a plate connecting said bars and formed with a series of openings through which the stops project, said plate forming a closure for the detents.

12. In a typewriting machine, the combination of a IOW of duplicate stops all mounted at letter-feeding intervals, said stops being settable, one at a time, to engage through which the stops protrude, and

means inclosed Within the frame and held in position thereby to automatically engage and hold the stops in operative position.

13. In a typewriting machine, the combi.

nation with a pair of rack bars formed with rack teeth on their opposing faces, said bars spaced apart along said rack teeth, of a row of duplicate stops all mounted at letterfeeding intervals and bridging the space between said bars, said stops being settable, one at a time, to engage selectively a single row of effective column stops, and said rack teeth corresponding in depth With the contained length of said stops to form continuous guides therefor, and an individual detent for each stop to hold it in both its retracted and set positions. v

14. In a Writing machine, the combination of a row of duplicate stops all mounted at letter-feeding intervals, said stops being independently settable for engagement selective-1y With a single roW of counter-stops, a frame comprising spaced rack bars supporting and guiding said duplicate stops, the latter bridging the space between said rack bars, and individual detents mounted in said frame to hold said duplicate stops in both their normal and set positions; each detent comprising a ball provided With a compression spring to press the ball against the edge of the stop; said detents having a stag gered arrangement in said frame.

15. In a Writing machine, the combination of a roW of duplicate stops all mounted at letter-feeding intervals, said stops bei ng'independently settable for engagement selectively with a single row of counter-stops, a frame comprising spaced rack bars supporting and guiding said duplicate stops, the latter bridging the space between said rack bars, and individual detents mounted in said frame to hold said duplicate stops in both their normal and set positions; each detent comprising a ball provided With a compression spring to press the ball against the edge .of the stop; said detents being placed in the opposite rack bars, the detents in one rack bar alternating with those in the other rack bar. 1

ALFRED G. F. KUROWSKI. Witnesses:

F. E. ALEXANDER, 1A. BROPHY. 

